# File lib/rubygems/installer.rb, line 146 def build_support_directories(install_dir) unless File.exist? File.join(install_dir, "specifications") FileUtils.mkdir_p File.join(install_dir, "specifications") end unless File.exist? File.join(install_dir, "cache") FileUtils.mkdir_p File.join(install_dir, "cache") end unless File.exist? File.join(install_dir, "doc") FileUtils.mkdir_p File.join(install_dir, "doc") end end